Updates
Observing Log & Sessions: 13 January
Blog: 12 January
Discoveries: 27 April
Coming soon...
Weekly update
Deep Sky Forum's Object of the Week
Monthly updates
Webb Deep-Sky Society's Objects of the Month
Cloudy Nights' Objects of the Month
Astrotreff's Object(s) of the Month
27 April
Observing guides for Cloudy Nights' Objects of the Month - May 2024
Double star "Mizar" (Zeta Ursae Majoris) & "Alcor" (80 Ursae Majoris) - STF1744 (WDS13239-5456) in Ursa Major
Galaxy pair NGC3445 & MCG+10-16-024 (Arp 24) in Ursa Major
Asterism "Gottlieb's Circle" and galaxies PGC2193753 & SDSS J181734.57+421041 in Lyra
Page Astronomy - Discoveries updated: Object nr. 303 added
23 April
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 16
Galaxy NGC5084 in Virgo
15 April
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 15
Galaxy pair Arp 24 (NGC3445 & MCG+10-16-024) in Ursa Major
7 April
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 14
Globular cluster Omega Centauri (NGC5139 - Lacaille I.5) in Centaurus
1 April
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 13
Galaxy MCG+09-15-113 (Vorontsov-Vel'yaminov 124) in Ursa Major
Observing guides for the Webb Deep-Sky Society's Objects of the Month - April 2024
Galaxy NGC5903 in Libra
Open cluster Melotte 111 - the "Coma Berenices Cluster" in Coma Berenices
Double star STF1645 (WDS12281+4448) in Canes Venatici
Double star South & J. Herschel 195 (WDS15145-1826) in Libra
Observing guide for Astrotreff's Objects of the Month - April 2024
Galaxy group Holmberg 387 in Coma Berenices
24 March
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 12
Galaxy Messier 82 (NGC3034 - Arp 337) - the "Cigar Galaxy" in Ursa Major
23 March
Page Astronomy - Discoveries updated: Object nr. 302 added
22 March
Observing guides for Cloudy Nights' Objects of the Month - April 2024
Open cluster NGC2158 in Gemini
Galaxy pair NGC4204 & PGC39187 in Coma Berenices
Galaxy MCG+03-31-055 in Coma Berenices
17 March
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 11
Galaxy NGC4753 - the "Evil Eye Galaxy" in Virgo
Page Astronomy - Discoveries updated: Object nr. 301 added
16 March
Page Astronomy - Discoveries updated: Object nr. 300 added
14 March
Page Astronomy - Discoveries updated: Objects nr. 298 & 299 added
12 March
Page Astronomy - Discoveries updated: Object nr. 297 added
11 March
Observing guides for Deep Sky Forum's Objects of the Week - 2024 - 10
Globular cluster NGC4147 in Coma Berenices
Galaxy MCG+03-31-055 in Coma Berenices
10 March
Page Astronomy - Discoveries updated: Objects nr. 292 through 296 added
9 March
Page Astronomy - F.A.Q. updated
3 March
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 9
Globular cluster Palomar 4 - the "Ursa Major Dwarf" in Ursa Major
1 March
Observing guides for the Webb Deep-Sky Society's Objects of the Month - March 2024
Galaxy Group Holmberg 173 in Sextans
Globular cluster NGC4147 in Coma Berenices
Double star 38 Lyncis (WDS09188+3648) in Lynx
Double star Dunlop 81 (WDS09543-4517) in Vela
Observing guide for Astrotreff's Objects of the Month - March 2024
Planetary nebula Ellison, Grayson, Bond 6 in Leo
29 February
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 8
Galaxy NGC4293 in Coma Berenices
20 February
Observing guides for Cloudy Nights' Objects of the Month - March 2024
Open cluster Melotte 20 - the "Alpha Persei Cluster" in Perseus
Planetary nebula IC2149 in Auriga
Emission nebula Sharpless 2-241 & reflection nebula Struve-Straka 49 in Auriga
Reflection nebula Cederblad 61 in Auriga
19 February
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 7
Galaxy pair Arp 96 (MCG+14-04-010 & MCG+14-04-011) in Cepheus
12 February
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 6
Open cluster Messier 41 (NGC2287) - the "Little Beehive" in Canis Major
5 February
Page Astronomy - Discoveries updated: Objects nr. 287 through 291 added
4 February
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 5
Reflection nebula Sazhen 30 in Orion
Page Astronomy - Discoveries updated: Objects nr. 283 through 286 added
1 February
Observing guides for the Webb Deep-Sky Society's Objects of the Month - February 2024
Galaxy cluster Abell 779 in Lynx
Open cluster Messier 44 (NGC2632) - "Praesepe" in Cancer
Double star South 548 (WDS07277+2208) in Gemini
Double star HJ4093 (WDS08263-3904) in Puppis
30 January
Observing guide for Astrotreff's Objects of the Month - February 2024
Reflection nebulae IC423 - the "Teardrop Nebula", IC424 - the "Spooky Nebula" & IC426 - the "Mushroom Nebula" in Orion
27 January
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 4
Nebula and open cluster NGC1931 - "the Fly" & reflection nebula Parsamian 1 in Auriga
Page Astronomy - Discoveries updated: Objects nr. 278 through 282 added
24 January
Update to all tables on this website that contain observations: multiple links added to relevant information
Page Astronomy - Discoveries updated: Objects nr. 276 & 277 added
22 January
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 3
Galaxy group Hickson 61 - "the Box" in Coma Berenices
Observing guides for Cloudy Nights' Objects of the Month - February 2024
Open cluster NGC2362 - the "Tau Canis Majoris Cluster" in Canis Major
Emission nebulae NGC1491 & Simeis 25 - the "Fossil Footprint Nebula" in Perseus
Reflection nebula GN 04.41.8 in Perseus
20 January
Page Astronomy - Discoveries updated: Objects nr. 274 & 275 added
19 January
Page Astronomy - Discoveries updated: Objects nr. 271, 272 & 273 added
15 January
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 2
Galaxy group Holmberg 795 - the "Deer Lick Group" in Pegasus
13 January
Observing sessions added: 8 January and 9 January 2024
12 January
Blog entry: Astrotrip - Mornans, 7 November 2023 (blog 2 of 2)
Observing sessions added: 7 November and 8 November 2023
7 January
Observing guide for Deep Sky Forum's Object of the Week - 2024 - 1
Open cluster Gaia 1 in Canis Major
New download: All Deep Sky Forum's Objects of the Month for the year 2023
2 January
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 53
Reflection nebulae Messier 78 (NGC2068), NGC2067 & NGC2064 and dark nebula Lynds 1627 in Orion
Observing guides for Cloudy Nights' Objects of the Month - January 2024
Open cluster NGC2169 - the "37 Cluster" in Orion
Galaxy NGC2424 in Lynx
Galaxy pair NGC2444 & NGC2445 (Arp 143) - "Genie in a bottle" in Lynx
New download: All Cloudy Nights' Objects of the Month for the year 2023
1 January
Observing guides for the Webb Deep-Sky Society's Objects of the Month - January 2024
Galaxy NGC3414 (Arp 162) in Leo Minor
Open cluster NGC2281 - the "Broken Heart Cluster" in Auriga
Double star 124 Tauri (STF755 - WDS05392+2317) in Taurus
Double star HJ3891 (WDS06455-3057) in Canis Major
New download: All Webb Deep-Sky Society's Objects of the Month for the year 2023
2023
30 December 2023
Observing guide for Astrotreff's Object of the Month - January 2024
Open cluster Melotte 20 - the "Alpha Persei Cluster" in Perseus
New download: All Astrotreff Objects of the Month for the year 2023
26 December 2023
Blog entry: Astrotrip - Mornans, 6 November 2023 (blog 1 of 2)
Observing session added: 6 November 2023
25 December 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 52
Galaxy MCG+02-33-041 (Vorontsov-Vel'yaminov 558) - "Imprint of a Foot" in Virgo
22 December 2023
Observing guide for the Webb Deep-Sky Society's Object of the Season - Winter 2023
Reflection nebula NGC1788 & dark nebula Lynds 1616 - the "Cosmic Bat" in Orion
18 December 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 51
Galaxy NGC404 - "Mirach's Ghost" in Andromeda
16 December 2023
Pages added for all Observing Sessions in the years 2003, 2005, 2006, 2007 & 2008
12 December 2023
Pages added for all Observing Sessions in the year 2009
10 December 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 50
Globular cluster Messier 79 (NGC1904) in Lepus
9 December 2023
Pages added for all Observing Sessions in the year 2010
4 December 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 49
Galaxy group Hickson 18 in Aries
Pages added for all Observing Sessions in the year 2011
1 December 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - December 2023
Galaxy NGC1507 in Eridanus
Planetary nebula NGC2022 - the "Kissing Crescents Nebula" in Orion
Double star Burnham 891 (WDS05298+1825) in Taurus
Double star Hargrave 2 (WDS05012-7420) in Mensa
Observing guides for Astrotreff's Objects of the Month - December 2023
Asterism "Kemble's Cascade" in Camelopardalis
Open cluster NGC1502 - the "Golden Harp Cluster" in Camelopardalis
30 November 2023
Pages added for all Observing Sessions in the years 2012 & 2013
27 November 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 48
Planetary nebula Simeis 280
24 November 2023
Page Astronomy - Discoveries updated: Objects nr. 269 & 270 added
20 November 2023
Observing guides for Cloudy Nights' Objects of the Month - December 2023
Open cluster NGC457 - the "Owl Cluster" in Cassiopeia
Galaxy NGC918 and molecular clouds PGCC G152.05-39.03 & PGCC G152.05-39.03 in Aries
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 47
Galaxies SDSS J023915.24-080657.8 & PGC3097693 in Cetus
15 November 2023
Page Astronomy - Discoveries updated: Objects nr. 266, 267 & 268 added
14 November 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 46
Reflection nebula Neckel-Staude 2 & dark nebula Lynds 1299 in Cassiopeia
3 November 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 45
Galaxy NGC918 and molecular clouds PGCC G152.05-39.03 & PGCC G152.05-39.03 in Aries
1 November 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - November 2023
Galaxy pair NGC777 & NGC778 in Triangulum
Open cluster Messier 45 - "the Pleiades" in Taurus
Double star 59 Andromeda (STF222 - WDS02109+3902) in Andromeda
Double star WNO 1 (WDS00532-2447) in Cetus
31 October 2023
Observing guides for Cloudy Nights' Objects of the Month - November 2023
The "Double Cluster" (NGC869 & NGC884) in Perseus
Galaxy pair Holmberg 796 (NGC7332 & NGC7339) in Pegasus
Galaxy pair Vorontsov-Vel'yaminov 1946 (IC5242 & IC5243) in Pegasus
Page Astronomy - Discoveries updated
30 October 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 44
Galaxy NGC253 - the "Silver Coin Galaxy" in Sculptor
29 October 2023
Pages added for all Observing Sessions in the years 2014 & 2015
28 October 2023
Pages added for all Observing Sessions in the year 2016
27 October 2023
Observing guide for Astrotreff's Object of the Month - November 2023
Galaxies NGC1055 - the "Smiley Galaxy" & Messier 77 (NGC1068) in Cetus
Page Astronomy - Discoveries updated
26 October 2023
Page Astronomy - Discoveries updated
24 October 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 43
Planetary nebula Pease 1 in Pegasus
Pages added for all Observing Sessions in the year 2017
21 October 2023
Pages added for all Observing Sessions in the year 2018
20 October 2023
Page Astronomy - Discoveries updated
19 October 2023
Page Astronomy - Discoveries updated
18 October 2023
Page Astronomy - Discoveries updated
16 October 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 42
Galaxy NGC7727 (Arp 222) in Aquarius
15 October 2023
Page Astronomy - Discoveries updated
14 October 2023
Page Astronomy - Discoveries updated
13 October 2023
Page Astronomy - Discoveries updated
12 October 2023
Page Astronomy - Discoveries updated
11 October 2023
Page Astronomy - Discoveries updated
10 October 2023
Page Astronomy - Discoveries updated
9 October 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 41
The UGC12127 galaxy group in Pegasus
7 October 2023
Pages added for all Observing Sessions in the year 2019
Page Astronomy - Discoveries updated
6 October 2023
Page Astronomy - Discoveries updated
5 October 2023
Page Astronomy - Discoveries updated
4 October 2023
Page Astronomy - Discoveries updated
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 39
The "Heart & Soul Complex" in Cassiopeia
3 October 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 40
Galaxy group IC1756, IC1757 & SDSS J015712.25-002821.5 in Cetus
2 October 2023
Page Astronomy - Discoveries updated
1 October 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - October 2023
Galaxy pair NGC783 & NGC785 in Triangulum
Open cluster NGC663 - the "Letter S Cluster" in Cassiopeia
Double star STF3042 (WDS23519+3753) in Andromeda
Double star 41 Aquarii (Herschel New 56 - WDS22143-2104) in Aquarius
Observing guide for Astrotreff's Object of the Month - October 2023
Galaxy Messier 33 (NGC598) - the "Pinwheel Galaxy" in Triangulum
Page Astronomy - Discoveries updated
30 September 2023
Page Astronomy - Discoveries updated
Pages added for all Observing Sessions in the year 2020
29 September 2023
Page Astronomy - Discoveries updated
24 September 2023
Page Astronomy - Discoveries updated
Pages added for all Observing Sessions in the year 2021
21 September 2023
Pages added for all Observing Sessions in the year 2022
20 September 2023
Pages added for all Observing Sessions in the year 2023
19 September 2023
New pages: Observing Sessions
18 September 2023
Page Astronomy - Discoveries updated
17 September 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 38
Globular cluster Palomar 11 in Aquila
16 September 2023
Observing log updated
12 September 2023
Observing log updated
11 September 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 37
Planetary nebula NGC7048 in Cygnus
5 September 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 36
Galaxy group NGC125, NGC126 & Vorontsov-Vel'yaminov 894 (NGC127, NGC128 & NGC130)
2 September 2023
Observing guide for Astrotreff's Object of the Month - September 2023
Galaxy NGC973 in Triangulum
1 September 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - September 2023
Galaxy pair NGC7603 & NGC7603B (Arp 92) in Pisces
Emission nebula NGC7538 - the "Northern Lagoon" in Cepheus
Double star Herschel New 11 (STF2978 - WDS23075+3250) in Pegasus
Double star Delta Piscis Austrini (Howe 91 - WDS22559-3232) in Piscis Austrinus
29 August 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 35
Galaxy group Rose 34 - "Robert's Quartet" in Phoenix
23 August 2023
Page Astronomy - Discoveries updated: objects 173 through 178 added
21 August 2023
Page Astronomy - Discoveries updated
20 August 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 34
Planetary nebula Henize 1-6 (PK 065-05.1) in Vulpecula
18 August 2023
Page Astronomy - Discoveries updated
17 August 2023
Page Astronomy - Discoveries updated
16 August 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 33
Open cluster NGC6846 & planetary nebula Kohoutek 4-41 in Cygnus
Page Astronomy - Discoveries updated
9 August 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 32
Reflection nebula IC4592 - the "Blue Horsehead Nebula" in Scorpius
1 August 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - August 2023
Galaxy NGC7013 in Cygnus
Open cluster NGC6910 - the "Rocking Horse Cluster" in Cygnus
Planetary nebula IC5117 in Cygnus
Double star Zeta Sagittae (STF2585 - WDS19490+1909) in Sagitta
Double star Dunlop 227 (WDS19526-5458) in Telescopium
Page Astronomy - Discoveries updated
31 July 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 31
Planetary nebula Kohoutek 3-27 in Lyra
Page Astronomy - Discoveries updated
Observing guide for Astrotreff's Object of the Month - August 2023
Asterism Ferrero 27 - the "Nibelung Ring" in Draco
30 July 2023
Page Astronomy - Discoveries updated
24 July 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 30
Emission nebula Sharpless & Osterbrock 15 - the "Zeta Ophiuchi Nebula" in Ophiuchus
16 July 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 29
Globular cluster NGC6453 in Scorpius
9 July 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 28
Galaxy pair KPG 394 (NGC5296 & NGC5297 - the "Hook Galaxy") & PGC2230517 in Canes Venatici
6 July 2023
Blog entry: Astrotrip - Rémuzat, 13 April 2023 (blog 3 of 3)
3 July 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 27
Planetary nebula NGC6578 in Sagittarius
1 July 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - July 2023
Galaxy NGC6956 in Delphinus
Planetary nebula NGC6781 - the "Snowglobe Nebula" in Aquila
Open cluster NGC6885 - the "20 Vulpecula Cluster" in Vulpecula
Double star STF2367 (WDS18413+3018) in Lyra
Double star Herschel VI 50 (WDS18413+3018) in Scutum
Double star STF2391 (WDS18487-0600) in Scutum
29 June 2023
Observing guides for Astrotreff's Objects of the Month - July 2023
Double star "Izar" or "Pulcherrima" - Epsilon Boötis (STF1877 - WDS14450+2704) in Boötes
Double star STT288 (WDS14534+1542) in Boötes
Double star Aitken 1110 (WDS14497+0759) in Boötes
Double star Eta Coronae Borealis (STF1937 - WDS15232+3017) in Corona Borealis
Double star STF1828 (WDS14170+2412) in Boötes
25 June 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 26
Globular cluster NGC5897 - the "Ghost Globular" in Libra
20 June 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 25
Galaxy Messier 100 (NGC4321) in Coma Berenices
11 June 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 24
Galaxy MCG+00-39-023 (Vorontsov-Vel'yaminov 847) in Serpens (Caput)
10 June 2023
Blog entry: Astrotrip - Rémuzat, 9 April 2023 (blog 2 of 3)
5 June 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 23
Globular cluster NGC5634 in Virgo
1 June 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - June 2023
Galaxies NGC5363 & NGC5364 in Virgo
Globular cluster NGC6229 in Hercules
Planetary nebula NGC6534 - the "Cat's Eye" in Draco
Double star Hussey 149 (WDS15246+5413) in Draco
Double star De Lalande 123 (WDS15332-2429) in Libra
31 May 2023
Blog entry: Astrotrip - Rémuzat, 8 April 2023 (blog 1 of 3)
30 May 2023
Observing guide for Astrotreff's Object of the Month - June 2023
Globular cluster NGC6229 in Hercules
28 May 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 22
Galaxy NGC5669 in Boötes
22 May 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 21
Globular clusters Messier 53 (NGC5024) & NGC5053 in Coma Berenices
21 May 2023
Observing guide for the Webb Deep-Sky Society's Object of the Season - Summer 2023
Planetary nebula Messier 57 (NGC6720) - the "Ring Nebula" in Lyra
15 May 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 20
Galaxy NGC2276 (Arp 25) in Cepheus
12 May 2023
Page Astronomy - F.A.Q. updated
10 May 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - May 2023
Galaxy NGC2911 (Arp 232) in Leo
Globular cluster Messier 4 (NGC6121) - the "Cat's Eye" in Scorpius
Globular cluster Messier 80 (NGC6093) in Scorpius
Double star STF1850 (WDS14286+2817) in Boötes
Double star South & J. Herschel 263 (WDS18179-1848) in Sagittarius
Double star South & J. Herschel 264 (WDS18187-1837) in Sagittarius
Observing guide for Astrotreff's Object of the Month - May 2023
Galaxies Messier 106 (NGC4258) in Canes Venatici
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 19
Galaxy NGC5253 in Centaurus
Observing guides for Deep Sky Forum's Objects of the Week - 2023 - 18
Galaxies NGC4666 - the "Superwind Galaxy", NGC4668, NGC4653, NGC4642 & NGC4632 in Virgo
26 April 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 17
Galaxy group SDSS J084905.43+111450.9, SDSS J084905.42+111451.0 & PGC1390839 in Cancer
25 April 2023
Page Astronomy - Discoveries updated
17 April 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 16
Globular cluster Messier 3 (NGC5272) in Canes Venatici
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 15
Galaxy MCG+06-24-006 (Vorontsov-Vel'yaminov 794) - the "Spider Galaxy" in Leo Minor
7 April 2023
New page: Blog - Astrotrips - 2023
6 April 2023
Update of the Webb Deep-Sky Society's Objects of the Month - April 2023
Double stars added:
STF1633 (WDS12077+2703) in Coma Berenices
STF1669 (WDS12413-1301) in Corvus
2 April 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 14
Galaxy NGC3090 in Sextans
1 April 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - April 2023
Galaxy pair Arp 206 (NGC3432 - the "Knitting Needle Galaxy" & MCG+06-24-027) in Leo Minor
Globular cluster NGC5286 in Centaurus
Planetary nebula NGC5307 in Centaurus
(double stars to follow)
Page Astronomy - Discoveries updated
31 March 2023
Page Astronomy - Discoveries updated
30 March 2023
Observing guide for Astrotreff's Object of the Month - April 2023
Galaxies Messier 95 (NGC3351) & Messier 96 (NGC3368) in Leo
27 March 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 13
Galaxy pair Holmberg 224 (NGC3507 & NGC3501) in Leo
20 March 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 12
Galaxy pair Arp 89 (NGC2648 & MCG+02-22-006) in Cancer
17 March 2023
Page Astronomy - Discoveries updated
13 March 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 11
Galaxy group Zwicky VIII 388 - "Zwicky's Necklace"
9 March 2023
Page Astronomy - Discoveries updated
7 March 2023
Page Astronomy - Discoveries updated
6 March 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 10
Planetary nebula AFGL 915 - the "Red Rectangle" in Monoceros
1 March 2023
Observing guides for the Webb Deep-Sky Society's Objects of the Month - March 2023
Galaxy pair Arp 270 (NGC3395 & NGC3396) in Leo Minor
Open cluster NGC3532 - the "Wishing Well Cluster" in Carina
Double star STF1374 (WDS09414+3857) in Leo Minor
Double star STF1369 (WDS09354+3958) in Lynx
Double star See 115 (WDS09372-5340) in Vela
27 February 2023
Observing guides for Astrotreff's Objects of the Month - March 2023
Open cluster Messier 35 (NGC2168) in Gemini
Open cluster NGC2158 in Gemini
Open cluster IC2156 in Gemini
Open cluster IC2157 in Gemini
Open cluster NGC2129 in Gemini
26 February 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 9
Galaxy pair PGC33452 (Markarian 421) & PGC33453
Page Astronomy - Discoveries updated
20 February 2023
Page Astronomy - Discoveries updated
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 8
The "Seagull Nebula" in Monoceros & Canis Major
19 February 2023
Page Astronomy - Discoveries updated
18 February 2023
Page Astronomy - Discoveries updated
17 February 2023
Observing Log updated
16 February 2023
Article Parsamian Cometary Nebulae updated - some information added / corrected
Page Astronomy - Discoveries updated
Update of the observing guides for double stars STF844 & STF848 in Astrotreff's Objects of the Month - February 2023: error in WDS corrected for STF848, notes added
12 February 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 7
Double star Theta-1 Orionis - "the Trapezium" and ionized protoplanetary disks 'proplyds' in Orion
10 February 2023
Page Astronomy - Discoveries updated
6 February 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 6
Galaxy group IC2375, IC2377 & IC2379 in Puppis
2 February 2023
Page Astronomy - Discoveries updated
1 February 2023
Observing guides for Astrotreff's Objects of the Month - February 2023
Asterism Persson 1 - the "Xi Orionis Group" in Orion
Open cluster NGC2169 - the "37 Cluster" in Orion
Double star STF844 (WDS06083+1400) in Orion
Double star STF848 (WDS06085+1358) in Orion
Double star Xi Orionis (Jonckheere 2016 - WDS06119-1413) in Orion
Observing guides for the Webb Deep-Sky Society's Objects of the Month - February 2023
Galaxy group Hickson 40 in Hydra
Open cluster Messier 67 (NGC2682) - the "King Cobra" in Cancer
Double star STF1108 (WDS07328-2253) in Gemini
Double star 2 Puppis (STF1138 - WDS07455-1441) in Puppis
31 January 2023
Page Astronomy - Discoveries updated
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 5
Planetary nebula Simeis 22 - the "Dolphin Nebula" in Cassiopeia
23 January 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 4
Galaxy MCG+02-21-013 in Cancer
16 January 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 3
Galaxy NGC2683 - the "UFO Galaxy" in Lynx
8 January 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 2
Planetary nebula Abell 8 in Auriga
7 January 2023
CSOG 2.4 interim update, new edition: Pleiades Nebulae
Observing guide for the Webb Deep-Sky Society's Object of the Season - Winter 2022
Galaxy NGC4565 - the "Needle Galaxy" in Coma Berenices
2 January 2023
Observing guide for Deep Sky Forum's Object of the Week - 2023 - 1
Emission nebula NGC7538 - the "Northern Lagoon Nebula" in Cepheus
1 January 2023
Observing guides for Astrotreff's Objects of the Month - January 2023
Galaxy group Holmberg 704 (NGC5907, the "Splinter Galaxy" & PGC54419) in Draco
Galaxy group NGC5866 - the "Spindle Galaxy" & NGC5867 in Draco
Observing guides for the Webb Deep-Sky Society's Objects of the Month - January 2023
Galaxy NGC1740 in Orion
Galaxy NGC1753 in Orion
Reflection nebula NGC2245 in Monoceros
Open cluster Herschel 1 in Canis Minor
Double star 41 Aurigae (STF845 - WDS06116-4843) in Auriga
Double star Dunlop 30 (WDS06298-5014) in Puppis
2022
28 December 2022
Page Astronomy - Discoveries updated
27 December 2022
New downloads:
All Deep Sky Forum Objects of the Week for the year 2022
All Webb Deep-Sky Society's Objects of the Month for the year 2022
All Astrotreff Objects of the Month for the year 2022
26 December 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 52
Planetary nebula Abell 7 in Lepus
25 December 2022
Page Astronomy - Discoveries updated
22 December 2022
Observing Log updated
20 December 2022
Page Astronomy - Discoveries updated
19 December 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 51
The "Gamma Cassiopeiae Nebulae" in Cassiopeia
11 December 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 50
The "Criss-Cross Nebula" in Eridanus
5 December 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 49
Open cluster Messier 103 (NGC581) in Cassiopeia
4 December 2022
Page Astronomy - Discoveries updated
1 December 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - December 2022
Galaxy group NGC521, NGC533 & IC1694 in Cetus
Open cluster NGC1907 in Auriga
Reflection nebula NGC1985 in Auriga
Double star 47 Tauri (Burnham 547 - WDS04139+0916) in Taurus
Double star Skiff 949 (WDS03536-4654) in Horologium
Observing guide for Astrotreff's Object of the Month - December 2022
Galaxies NGC147 & NGC185 in Cassiopeia
28 November 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 48
Emission nebula Helwan 134 in Canis Major
26 November 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 47
Galaxy group Hickson 28 in Eridanus
Page Future CSOG updated
22 November 2022
Page Astronomy - Discoveries updated
21 November 2022
Page Astronomy - Discoveries updated
Observing Log updated
20 November 2022
Page Astronomy - Discoveries updated
19 November 2022
Page Astronomy - Discoveries updated
18 November 2022
Observing Log updated
Clear Skies now on Mastodon: @clearskies@astrodon.social
15 November 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 46
Galaxy group Hickson 98 in Pisces
14 November 2022
Page Astronomy - Discoveries updated
13 November 2022
Page Astronomy - Discoveries updated
7 November 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 45
Supernova remnant Simeis 147 - the "Spaghetti Nebula" in Taurus & Auriga
1 November 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - November 2022
Galaxy pair Arp 298 (NGC7469 & IC5283) in Pegasus
Open cluster NGC957 in Perseus
Planetary nebula IC351 in Perseus
Double star STT21 (WDS01030+4723) in Andromeda
Double star Mädler 1 (WDS01006+4719) in Andromeda
Double star HJ5437 (WDS00006-5306) in Phoenix
30 October 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 44
Galaxy NGC7184 - the "Saturn Ring Galaxy" in Aquarius
Page Astronomy - Discoveries updated
28 October 2022
Observing guide for Astrotreff's Object of the Month - November 2022
Galaxy group Arp 166 (NGC750, NGC751 & PGC2027448) in Triangulum
24 October 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 43
Planetary nebula NGC6741 - the "Phantom Streak" in Aquila
23 October 2022
Page Astronomy - Discoveries updated
22 October 2022
Page Astronomy - Discoveries updated
21 October 2022
Page Astronomy - Discoveries updated
16 October 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 42
Galaxy pair Arp 216 - NGC7679 & NGC7682 in Pisces
12 October 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 41
Galaxy NGC1055 - the "Smiley Galaxy" in Cetus
7 October 2022
Page Astronomy - Discoveries updated
5 October 2022
Page Astronomy - Discoveries updated
2 October 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 40
Galaxies NGC151 & SDSS J003408.19-094147.3 in Cetus
1 October 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - October 2022
Galaxy group KTG 5 in Pisces
Open cluster NGC129 in Cassiopeia
Open cluster Riddle 4 in Cassiopeia
Double star STT500 (WDS23374+4426) in Andromeda
Double star Dunlop 249 (WDS23239-5349) in Grus
30 September 2022
Observing guide for Astrotreff's Object of the Month - October 2022
Galaxy NGC404 - "Mirach's Ghost" in Andromeda
26 September 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 39
Galaxy pair NGC6744 & NGC6744A in Pavo
18 September 2022
Interim update to CSOG 2.4 - new edition: the Veil Nebula (V2.4.1)
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 38
Supernova remnant the "Veil Nebula" in Cygnus and Vulpecula
12 September 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 37
Galaxies MCG-06-02-022A - the "Cartwheel Galaxy", PGC2249, PGC2252 & PGC3170815 in Sculptor
5 September 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 36
Galaxy pair NGC7102 & PGC214783 in Pegasus
4 September 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 35
Galaxy cluster WBL 35 in Pisces
1 September 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - September 2022
Galaxy group Holmberg 820 in Pegasus
Open clusters NGC7261 & NGC7281 in Cepheus
Double star Gamma Delphini (STF2727 - WDS19121+4951) in Delphinus
Double star Russell 321 (WDS20269-3724) in Sagittarius
Double star Dunlop 230 (WDS20178-4011) in Sagittarius
31 August 2022
Observing guide for Astrotreff's Object of the Month - September 2022
Galaxy NGC891 - the "Silver Sliver Galaxy" in Andromeda
22 August 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 34
Galaxy cluster Abell 3744 in Capricornus
16 August 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 33
Open cluster Berkeley 82 in Aquila
12 August 2022
Update of the astronomy article Gaze-Shajn Emission Nebulae
7 August 2022
New astronomy article: Gaze-Shajn Emission Nebulae
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 32
Galaxy group Vorontsov-Vel'yaminov 129 in Hercules
1 August 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - August 2022
Galaxy NGC315 in Pisces
Reflection nebula NGC7023 - the "Iris Nebula" in Cepheus
Double star STF1954 (WDS19121+4951) in Cygnus
Double star Herschel New 126 (WDS19043-2132) in Sagittarius
Double star Herschel New 129 (WDS19042-2254) in Sagittarius
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 31
Globular cluster NGC6624 in Sagittarius
29 July 2022
Page Astronomy - Discoveries updated
Observing guide for Astrotreff's Object of the Month - August 2022
Nebula Cederblad 211 - the "R Aquarii Nebula" in Aquarius
28 July 2022
New astronomy article: Parsamian Cometary Nebulae
Interim update to CSOG 2.4: Parsamian Cometary Nebulae edition (V2.4.2)
24 July 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 30
Planetary nebula NGC6537 - the "Red Spider Nebula" in Sagittarius
18 July 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 29
Planetary nebula NGC6537 - the "Red Spider Nebula" in Sagittarius
16 July 2022
Blog entry: Astrotrip - Grand Est, 27 April 2022 (blog 2 of 2)
15 July 2022
Interim update to CSOG 2.4 - new edition: Parsamian Cometary Nebulae edition (V2.4.1)
11 July 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 28
Planetary nebula Kohoutek 1-16 & quasar KUV 18217+6419 in Draco
Page Astronomy - Discoveries updated
6 July 2022
Page Astronomy - Discoveries updated
5 July 2022
Page Astronomy - Discoveries updated
4 July 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 27
Planetary nebula Abell 41 in Serpens (Cauda)
2 July 2022
Blog entry: Astrotrip - Grand Est, 25 April 2022 (blog 1 of 2)
1 July 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - July 2022
Galaxy NGC6384 in Serpens (Caput)
Open cluster NGC6756 in Aquila
Double star Delta Serpentis (STF1954 - WDS15348+1032) in Serpens (Caput)
Double star Xi Ophiuchi (Donner 832 - WDS17210-2107) in Ophiuchus
29 June 2022
Observing guides for Astrotreff's Object of the Month - July 2022
Reflection nebula IC5076 and open cluster NGC6991 in Cygnus
26 June 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 26
A suspected reflection nebula, informally designated the "30 Ophiuchi Nebula" in Ophiuchus
24 June 2022
Blog entry: Astrotrip - Cornillac, 26 February 2022 (blog 4 of 4)
20 June 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 25
Galaxy group NGC6670 (Vorontsov-Vel'yaminov 1875) in Draco
12 June 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 24
Reflection nebula Parsamyan 21 in Aquila
8 June 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 23
Galaxy group Arp 71 in Hercules
5 June 2022
Blog entry: Astrotrip - Cornillac, 25 February 2022 (blog 3 of 4)
2 June 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - June 2022
Galaxy NGC5921 in Serpens (Caput)
Globular cluster NGC6356 in Ophiuchus
Double star Gamma Herculis (South & J. Herschel 227 - WDS16219+1909) in Hercules
Double star Eta Lupi (Rumker 21 - WDS16001-3824) in Lupus
Observing guides for Astrotreff's Objects of the Month - June 2022
Planetary nebula IC1295 in Scutum
Globular cluster NGC6712 in Scutum
30 May 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 22
Galaxy group Holmberg 729 in Serpens (Caput)
26 May 2022
Page Astronomy - Discoveries updated
25 May 2022
New page: Join the Clear Skies group on Groups.io
Page Future CSOG updated
23 May 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 21
Galaxy NGC5746 - the "Blade and Pearl Galaxy" in Virgo
21 May 2022
Page Astronomy updated
15 May 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 20
Galaxy group Holmberg 301 (NGC3949 & NGC3950) in Ursa Major
12 May 2022
Blog entry: Astrotrip - Cornillac, 23 February 2022 (blog 2 of 4)
9 May 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 19
Galaxy NGC4725 - the "TIE Fighter Galaxy" in Coma Berenices
2 May 2022
Observing guide for the Webb Deep-Sky Society's Object of the Season - Spring 2022
Galaxy Messier 82 (NGC3034, Arp 337) - the "Cigar Galaxy" in Ursa Major
1 May 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 18
Planetary nebula Minkowski 4-17 in Cygnus
Observing guides for the Webb Deep-Sky Society's Objects of the Month - May 2022
Galaxy pair Holmberg 478 (NGC4762 & NGC4754) in Virgo
Planetary nebula IC4593 - the "White Eyed Pea" in Hercules
Double star South & J. Herschel 191 (WDS14596-5352) in Boötes
Double star Mu Librae (Burnham 106 - WDS14493-1409) in Libra
Observing guide for Astrotreff's Object of the Month - May 2022
Galaxy Messier 101 (NGC5457, Arp 26) - the "Pinwheel Galaxy" in Ursa Major
24 April 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 17
Galaxies NGC5866 (Messier 102?) - the "Spindle Galaxy" & NGC5867 in Draco
18 April 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 16
Galaxy group Arp 248 - "Wild's Triplet" in Virgo
10 April 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 15
7 Planetary nebulae in Centaurus: Neckel-Vehrenberg 3-6, PN G292.8+00.6, NGC3699, Henize 2-67, PN G292.9+01.0, Wray 16-93 & Henize 2-70
9 April 2022
Blog entry: Astrotrip - Cornillac, 22 February 2022 (blog 1 of 4)
3 April 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 14
Galaxy group UGC7064A in Ursa Major
2 April 2022
Observing guide for Astrotreff's Object of the Month - April 2022
Galaxy NGC2976 in Ursa Major
Observing guides for the Webb Deep-Sky Society's Objects of the Month - April 2022
Galaxy pair Holmberg 377 (NGC4298 & NGC4302) in Coma Berenices
Globular cluster NGC5053 in Coma Berenices
Double star STF1781 (WDS13461+0507) in Virgo
Double star Jacob 16 (WDS11296-2428) in Crater
29 March 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 13
"Polaris" (Alpha Ursae Minoris) and surroundings
21 March 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 12
Galaxy NGC3646 in Leo
19 March 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 11
Planetary nebula Abell 5 in Perseus
7 March 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 10
Supernova remnant NGC2736 - "Hershel's Ray" in Vela
3 March 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 9
Herbig-Haro 222 - "the Waterfall" in Orion
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 8
Galaxy IC2461 - "the Dagger" in Lynx
Observing guide for Astrotreff's Object of the Month - March 2022
Galaxy NGC4449 - the "Box Galaxy" in Canes Venatici
Observing guides for the Webb Deep-Sky Society's Objects of the Month - March 2022
Galaxy cluster Abell 1185 in Ursa Major
Planetary nebula Messier 97 (NGC3587) - the "Owl Nebula" in Ursa Major
Double star 15 Boötis - Kuiper 66 (WDS14148+1006) in Boötes
Double star Herschel V 124 (WDS13535-3540) in Centaurus
Double star Howe 94 (WDS13849-3542) in Centaurus
13 February 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 7
Open cluster NGC6791 - "Platais' Oddball" in Lyra
6 February 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 6
Planetary nebula NGC2242 in Auriga
1 February 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - February 2022
Galaxy pair NGC3356 (Vorontsov-Vel'yaminov 529) - the "Armoured Motor Car" & PGC3468050 in Leo
Galaxy pair Vorontsov-Vel'yaminov 514 (NGC3349 & PGC2800694) in Leo
Galaxy NGC3362 in Leo
Double star Eta Canis Minoris - Burnham 21 (WDS07280+0657) in Canis Minor
Double star Dunlop 47 (WDS07247-3149) in Canis Major
30 January 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 5
Galaxy NGC3198 in Ursa Major
24 January 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 4
Galaxy pair Vorontsov-Vel'yaminov 1091 (NGC1531 & NGC1532) in Eridanus
23 January 2022
Observing guide for Astrotreff's Object of the Month - February 2022
Open cluster NGC2539 - the "Dish Cluster" in Puppis
16 January 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 3
Galaxy NGC1964 in Lepus
15 January 2022
New download: Observing guides for all Astrotreff's Objects of the Month for the year 2021
13 January 2022
Page Astronomy - Discoveries updated
10 January 2022
New download: Observing guides for Astrotreff's Objects of the Month - January 2022
Asterism NGC2240 in Auriga
Open cluster NGC1857 in Auriga
Open cluster NGC2192 in Auriga
Open cluster NGC1883 in Auriga
Globular cluster Palomar 2 in Auriga
Galaxy group Vorontsov-Vel’yaminov 1150 in Auriga
9 January 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 2
Planetary nebula Böhm-Vitense 5-3 in Perseus
7 January 2022
New download: Observing guides for all Webb Deep-Sky Society's Objects of the Season
5 January 2022
Page updated: Downloading CSOG
4 January 2022
New page: Astronomy F.A.Q.
Page CSOG F.A.Q. updated
2 January 2022
Observing guide for Deep Sky Forum's Object of the Week - 2022 - 1
Planetary nebula NGC1514 - the "Crystal Ball Nebula" in Taurus
New download: Observing guides for Deep Sky Forum's Objects of the Week for the year 2021
1 January 2022
Observing guides for the Webb Deep-Sky Society's Objects of the Month - January 2022
Galaxy cluster WBL 264 in Ursa Major
Open cluster and emission nebula NGC2264 - the "Christmas Tree Cluster” and the “Fox Fur Nebula" in Monoceros
Double star Phi Tauri - South & J. Herschel 40 (WDS04204+2721) in Taurus
Double star Tau Canis Majoris - HJ3948 (WDS07187-2457) in Canis Major
New download: Observing guides for the Webb Deep-Sky Society's Objects of the Month for the year 2021
2021
30 December 2021
Page Astronomy - Discoveries updated
26 December 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 52
Galaxy NGC474 (part of Arp 227) in Pisces
New page: Future CSOG
21 December 2021
Page Astronomy - Discoveries updated
20 December 2021
19 December 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 51
Galaxy MCG+04-09-005 (PGC13696) in Taurus
15 December 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 50
Galaxy pair Arp 166 in Triangulum
12 December 2021
Blog entry: Astrotrip - Cornillac, 8 October 2021 (blog 4 of 4)
7 December 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 49
Reflection nebula NGC1999 - the "Keyhole Nebula" and Herbig-Haro 1 & 2 in Orion
1 December 2021
Observing guides for the Webb Deep-Sky Society's Objects of the Month - December 2021
Galaxy NGC1723 in Eridanus
Open cluster and emission nebula NGC1624 in Perseus
Emission nebula NGC1579 - the "Northern Trifid Nebula" in Perseus
Double star STT65 (WDS03503+2535) in Taurus
Double star Dunlop 15 (WDS03398-4022) in Eridanus
30 November 2021
Blog entry: Astrotrip - Cornillac, 7 October 2021 (blog 3 of 4)
28 November 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 48
Galaxy PGC11282 in Cassiopeia
22 November 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 47
Open cluster NGC7789 - "Caroline's Rose" in Cassiopeia
21 November 2021
Page CSOG - Observing Guides - Image Orientations updated
20 November 2021
Page Astronomy - Discoveries updated
17 November 2021
Search function added, in menu bar and on Search page
14 November 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 46
Galaxy group WBL 52 in Aries
8 November 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 45
Galaxy NGC6384 in Ophiuchus
3 November 2021
Blog entry: Astrotrip - Cornillac, 6 October 2021 (blog 2 of 4)
2 November 2021
Observing guide for Deep Sky Forum's Object of the Week - 44
Galaxy cluster Abell S963 in Capricornus
Observing guides for the Webb Deep-Sky Society's Objects of the Month - November
Galaxy cluster Abell 347 in Andromeda
Open cluster NGC1245 – the “Patrick Starfish Cluster” in Perseus
Planetary nebula IC2003 in Perseus
Double star Phi Andromedae (STT515 – WDS01095+4715) in Andromeda
Double star 66 Ceti (STF231 – WDS02128-0224) in Cetus
Observing guide for the Webb Deep-Sky Society's Object of the Season - Winter 2021
25 October 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 43
Emission nebula IC1396, open cluster Trumpler 37, dark nebula IC1396A – “the Elephant Trunk” and reflection nebula Van den Bergh 142 in Cepheus
23 October 2021
Blog entry: Astrotrip - Cornillac, 29-30 September 2021 (blog 1 of 4)
17 October 2021
Page Astronomy - Discoveries updated
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 42
Galaxies NGC218 & MCG+06-02-017 (Vorontsov-Vel'yaminov 527) - "the Pattern" in Andromeda
16 October 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - October
Galaxies NGC870, NGC871, NGC876 & NGC877 in Aries
Open clusters NGC133, NGC146 & King 14 in Cassiopeia
Planetary nebula NGC246, the “Skull Nebula” in Cetus
Double star STF3053 in Cassiopeia
Double star STF3008 in Aquarius
13 October 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 41
Nebulae IC59 & IC63 - the "Gamma Cassiopeia Nebulae" in Cassiopeia
12 October 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 40
Galaxy group IC275 (Zwicky V 309) in Perseus
29 September 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 39
MCG-06-07-001 – “Fornax Dwarf Galaxy” & globulars in Fornax
21 September 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 38
Planetary nebula NGC7354 in Cepheus
14 September 2021
13 September 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 37
Supernova remnant the "Veil Nebula" in Cygnus
10 September 2021
Page Astronomy - Discoveries updated
9 September 2021
Observing guides for all Webb Deep-Sky Society's Objects of the Season:
2021
2020
2019
2018
2017
2016
2015
2014
5 September 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 36
Galaxies IC5285 & NGC7489 in Pegasus
1 September 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - September 2021
Galaxy group Holmberg 802 in Pegasus
Open cluster Mayer 1 and emission nebula Sharpless 173 in Cassiopeia
Planetary nebula NGC7354 in Cepheus
Double star STF2883 in Cepheus
Double star Harvard 298 in Grus
29 August 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 35
Galaxy group Holmberg 820 in Pegasus
22 August 2021
New article: iPad Astronomy
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 34
Globular cluster NGC7492 in Aquarius
16 August 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 33
Galaxy group Arp 169 in Pegasus
9 August 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 32
Globular clusters Terzan 7 & 8 in Sagittarius
1 August 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - August 2021
Galaxies NGC6658 & NGC6661 in Hercules
Open cluster NGC6940 – the “Mothra Cluster” in Vulpecula
Planetary nebula NGC7008 – the “Fetus Nebula” in Cygnus
Double star STT358 in Hercules
Double star “Arkab Prior” – Beta-1 Sagittarii (Dunlop 226) in Sagittarius
31 July 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 31
Globular cluster Messier 55 (NGC6809) - the "Specter Cluster" in Sagittarius
29 July 2021
Page Astronomy - Discoveries updated
25 July 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 30
Emission nebula Minkowski 1-88 in Serpens (Cauda)
Observing aid added: Celestial Poles
18 July 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 29
Planetary nebula Henize 3-1475 - the "Garden Sprinkler" in Sagittarius
12 July 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 28
Galaxy cluster Abell 2063 in Serpens (Caput)
4 July 2021
2 July 2021
Updated page Downloading CSOG
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 27
Planetary nebula Abell 69 in Cygnus
1 July 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - July 2021
Galaxy NGC6487 in Hercules
Open cluster NGC6633 - the "Wasp-Waist Cluster" in Ophiuchus
Planetary nebula NGC6742 in Draco
Double star STF2244 in Ophiuchus
Double star Kappa-2 Coronae Australis (Dunlop 222) in Corona Australis
28 June 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 26
Planetary nebula NGC6894 in Cygnus
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 25
Galaxy group Arp 302 - the "Exclamation Mark Galaxies" in Boötes
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 24
Galaxy MCG-05-31-039 - "Hardcastle's Nebula" in Centaurus
23 June 2021
13 June 2021
Blog update: CSOG 2.4 - coming soon
8 June 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 23
Globular cluster NGC5694 in Hydra
2 June 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - June 2021
Galaxy NGC5899 in Boötes
Globular cluster Messier 107 (NGC6171) in Ophiuchus
Planetary nebula NGC6210 – the “Turtle Planetary Nebula” in Hercules
Double star STF1972 in Ursa Minor
Double star Herschel 6 51 in Virgo
Double star Burnham 348 in Virgo
1 June 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 22
Galaxy NGC5037 in Virgo
25 May 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 21
Galaxy NGC3504 in Leo Minor
17 May 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 20
Galaxy group Arp 111 - the "Flying Ant Galaxy" in Canes Venatici
16 May 2021
Blog entry: Backyard session - 2 May 2021
10 May 2021
Blog entry: Backyard session - 12 April 2021
9 May 2021
Blog entry: Backyard session - 11 April 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 19
Planetary nebula NGC5882 in Lupus
7 May 2021
2 May 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 18
Galaxy MCG+06-30-008 in Canes Venatici
1 May 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - May 2021
Galaxy group Arp 286 in Virgo
Globular cluster NGC5634 in Virgo
Planetary nebula NGC6058 in Hercules
Double star 1 Boötis (STF1772) in Boötes
Double star "Rigil Kentaurus, Toliman & Proxima Centauri" (Alpha Centauri - Richaud 1) in Centaurus
Observing guide for the Webb Deep Sky Society's Object of the Season - Summer 2021
Planetary nebula NGC6826 - the "Blinking Planetary" in Cygnus
29 April 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 17
Galaxy NGC4517 in Virgo
20 April 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 16
Galaxy NGC5474 & HII region PGC2448110 in Ursa Major
14 April 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 15
Galaxies NGC3786 & NGC3788 - Arp 294 in of Ursa Major
7 April 2021
Login & registration page added for CSOG downloads
6 April 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 14
Galaxy cluster Abell S636 - the "Antlia Group" in Antlia
1 April 2021
Observing guides for the Webb Deep Sky Society's Objects of the Month - April 2021
Galaxies NGC3636 & NGC3637 in Crater
Globular cluster Messier 3 (NGC5272) in Canes Venatici
Planetary nebula IC3568 – the “Lemon Slice Nebula” in Camelopardalis
Double star 35 Sextantis (STF1466) in Sextans
Double star Cape Observarory 12 in Crux
31 March 2021
New page: CSOG - Download - Webb Deep Sky Society's Objects of the Month
Observing guides for the Webb Deep Sky Society's Objects of the Month:
March 2021
Galaxy group Arp 307 in Leo
Asterism NGC3231 in Ursa Major
Planetary nebula NGC3242, the "Ghost of Jupiter" in Hydra
Double star STF1426 in Leo
Double star Burnham 208 in Pyxis
February 2021
Galaxy group WBL 142 in Gemini
Asterism NGC2678 in Cancer
Planetary nebula NGC2610 in Hydra
Double star Phi-2 Cancri (STF1223) in Cancer
Double star Upsilon Cancri (STF1224) in Cancer
Double star Pi Puppis (Dunlop 43) in Puppis
January 2021
Galaxy group Holmberg 124 in Ursa Major
Open cluster IC2157 in Gemini
Open cluster IC2156 in Gemini
Open cluster IC2158 in Gemini
Open cluster Messier 35 (NGC2168) in Gemini
Reflection nebula NGC2261 - "Hubble's Variable Nebula" in Monoceros
Double star 32 Orionis (STF728) in Orion
Double star "Mintaka" - Delta Orionis (STFA14) in Orion
Observing guide for the Webb Deep Sky Society's Object of the Season - Spring 2021
Planetary nebula NGC3242 - the "Ghost of Jupiter" in Hydra
30 March 2021
Observing Log updated - observation database can now be filtered by telescope and observing site
29 March 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 13
The tidal tail of galaxy NGC3628 in Leo
22 March 2021
Page Astronomy - Discoveries updated
Clear Skies Observing Guides - Frequently Asked Questions update - future editions updated
21 March 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 12
Galaxy NGC3341 in Sextans
15 March 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 11
Galaxy group Hickson 44 - the "Gamma Leonis Group" in Leo
Page Astronomy - Discoveries updated
7 March 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 10
Planetary nebula Abell 31 (Sharpless 290) in Cancer
1 March 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 9
Galaxy NGC2537 (Arp 6) - the "Bear Paw Galaxy" in Lynx
26 February 2021
21 February 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 8
the "VY Canis Majoris Nebula"
15 February 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 7
Open cluster Messier 44 (NGC2632) - "Praesepe" & background galaxies in Cancer
7 February 2021
Observing guide for Deep Sky Forum's Object of the Week - 2021 - 6
Galaxy group KPG 132 - NGC2336 & IC467 in Camelopardalis
31 January 2021
New page: CSOG - Download - Deep Sky Forum's Objects of the Week
Observing guides for Deep Sky Forum's Objects of the Week:
2021 - Week 5
Emission nebula NGC1491, the "Fossil Footprint Nebula" in Perseus
2021 - Week 4
Galaxy Holmberg II (Arp 268) in Ursa Major
2021 - Week 3
Galaxy NGC2523 (Arp 9) in Camelopardalis
2021 - Week 2
Reflection nebula IC2169 - "Dreyer's Nebula" & open cluster Collinder 95 in Monoceros
2021 - Week 1
Galaxy NGC891 - the "Silver Sliver Galaxy" in Andromeda
30 January 2021
2020
4 December 2020
Page Astronomy - Discoveries updated
8 November 2020
Page Astronomy - Discoveries updated: DECaLS DR8 images added to non-stellar objects within survey coverage
24 September 2020
Blog entry: Backyard session - 18 September 2020
23 September 2020
Page Astronomy - Discoveries updated
20 September 2020
Blog entry: Backyard session - 17 September 2020
16 September 2020
Blog entry: Backyard session - 13 September 2020
14 September 2020
Blog entry: Backyard session - 10 September 2020
5 September 2020
Page Astronomy - Discoveries updated
21 August 2020
Blog entry: Backyard session - 18 August 2020
16 August 2020
15 August 2020
New page: Photography - Stargazing
1 August 2020
New page: Photography: Meteor photography
24 July 2020
New CSOG Edition: Struve Double Stars
Photography: Timelapse - The mystic dance of comet NEOWISE
7 July 2020
Page Astronomy - Discoveries updated
27 May 2020
Blog entry: Backyard session - 25 May 2020
23 May 2020
All CSOG downloads now have a button that downloads only an edition's AstroPlanner planfile(s) and tour files, without the pdf's.
21 May 2020
First blog entry: Backyard session - 19 May 2020
9 May 2020
Clear Skies group on Groups.io
8 May 2020
New page: Astronomy - Discoveries
4 May 2020
New page: Astronomy - Observing Log